Help needed: Boxter fails to restart after rebuild / windows no longer work

[Jamesp]

Originally Posted by healthservices

its sucks how we sometimes just miss one simple step and it totally fubars everything.

It's not technically FUBAR, If I had bent the valves, then Yeah, but as is it's not F****d Up Beyond All Repair.

[healthservices]

I just find it strange that the instructions would state to rotate the motor 360 with no regard to what the cams positions are???

Ah... maybe because when the cams is held in position with the cam timing tool none of the valves on that side of the head is fully open, thus no interference when the motor is rotated?

[Jake Raby]

Originally Posted by healthservices

I just find it strange that the instructions would state to rotate the motor 360 with no regard to what the cams positions are???

Ah... maybe because when the cams is held in position with the cam timing tool none of the valves on that side of the head is fully open, thus no interference when the motor is rotated?

The engine is designed to accommodate this due to the positions of the VVT arrangement.

Don't over think it. Set cam timing on bank 1, remove the tools, rotate the engine 360*, lock the crank, fit the cams and timing tools and fit the tensioner or pre-tensioner tool, then tighten it all up. Remove the tools and you are done..
No need in over thinking it or worrying about anything else.

Or just wait for my book to be published, which has 3 chapters on cam timing, to include 3 and 5 chain specific, step by step procedures.

[Gilles]

Originally Posted by Jake Raby

Or just wait for my book to be published, which has 3 chapters on cam timing, to include 3 and 5 chain specific, step by step procedures.

Jake,
How long would be for your book to be available?

.

[Jake Raby]

Originally Posted by Gilles

Jake,
How long would be for your book to be available?

.

Thats up to the publisher. The target is late spring.

[BYprodriver]

When the engine is at top dead center TDC, & the cams are properly allocated, all cam followers are on the base circle of the cams. All valves are seated.

This is why if the engine will not be started for a month or more you should put engine at TDC to unload valve springs.

[healthservices]

Originally Posted by BYprodriver

When the engine is at top dead center TDC, & the cams are properly allocated, all cam followers are on the base circle of the cams. All valves are seated.

This is why if the engine will not be started for a month or more you should put engine at TDC to unload valve springs.

I can understand that for number one... but what about cylinder 4 when 1 is at TDC?

lets say the Firing Order is 1-6-2-4-3-5 would it not stand to reason that the number 4 is at btdc and sucking in air with full lift? maybe I'm just reading too much into it.

[Walter White]

I think it's the gas, the gas is bad. Definitely the Gas. It's all bad.

[Jamesp]

Originally Posted by Walter White

I think it's the gas, the gas is bad. Definitely the Gas. It's all bad.

It's all good except the gas, and the valve timimg which soon will be. I'll mix the old gas with new and burn it in an old lawnmower. The smoke should kill mosquitos. What is good is that everyone on this string is learning (sadly from my mistake, I prefer to learn from others) or teaching. I'm about halfway getting the engine out to correctly time the valves. Then I'll spin it up again, and who knows?, it might start. Then it's on to the windows - and all the grounds were tight.

[BYprodriver]

Originally Posted by healthservices

I can understand that for number one... but what about cylinder 4 when 1 is at TDC?

lets say the Firing Order is 1-6-2-4-3-5 would it not stand to reason that the number 4 is at btdc and sucking in air with full lift? maybe I'm just reading too much into it.

That is the firing order but you have to take into account the cam opening & closing specs. You would have to rig up a degree wheel to determine when max lift occurs.

[Jamesp]

Engine is back out.

[healthservices]

Any updates?

[particlewave]

^ +1

Been watching both of your threads intently and the suspense is killing me!
It's a real cliffhanger

[Jamesp]

Engine comes out today after work to correct the valve timing. Likely back in tomorrow for another shot.

[woodsman]

Originally Posted by particlewave

^ +1

been watching both of your threads intently and the suspense is killing me!
it's a real cliffhanger

+1!!!!!!!!!!

[Jamesp]

Rolled the engine to TDC and checked the valve timing on both sides. The timing tool goes in both sides perfectly.

[jsceash]

That is a problem it should only go into one side. You should have to rotate the engine one hole revolution and pin the second time before it goes into the second side. At that point it will not seat in the first side

[healthservices]

Cool!

Fix the timing. Pull the plugs, hook up jumper cables to starter, open throttle, remove spark plugs and do a compression test.... or as mention do a leak down

[seningen]

Originally Posted by jsceash

That is a problem it should only go into one side. You should have to rotate the engine one hole revolution and pin the second time before it goes into the second side. At that point it will not seat in the first side

You have your answer.

Before going to far check leak down as you spin it around just to make sure you didn't hit and valves. Quick test and save you some work in case you did.

It won't be in proper time but there should be a point where each cyl is fully closed.

If all is good, then retine properly

Mike

[Ckrikos]

Great post. I wish I could do this.